Computing Device having a Spectrally Selective Radiation Emission Device

ABSTRACT

A computing device having a spectrally selective radiation emission device is described. In one or more implementations, an apparatus includes a housing, one or more electrical components disposed within the housing, and a spectrally selective radiation emission device. The one or more electrical components are configured to generate heat during operation. The spectrally selective radiation emission device is disposed on the housing and configured to emit radiation when heated by the one or more electrical components at one or more wavelengths of electromagnetic energy and reflect radiation at one or more other wavelengths of electromagnetic energy.

BACKGROUND

Mobile computing devices such as tablets and mobile phones are typicallyconfigured in a form factor that is designed to be held by one or morehands of a user. As heat may develop during operation, these devices arealso designed to remain at or below a safe temperature limits duringoperation such that the devices do not burn the user nor harm theinternal components of the device.

For example, once a device reaches a safe temperature limit, powerconsumption by the device may be reduced to also reduce the amount ofheat generated by the device. However, this may also have an adverseeffect on device performance, e.g., reduced computational functionalitythat is made available to a user. Thus, safe temperature limits defineddue to the handheld nature of the computing device, as well as safetemperature limits for other devices that are not hand held (such as toprotect internal components of the device), may have an impact onfunctionality of the device that is made available to a user.

SUMMARY

A computing device having a spectrally selective radiation emissiondevice is described. In one or more implementations, an apparatusincludes a housing, one or more electrical components disposed withinthe housing, and a spectrally selective radiation emission device. Theone or more electrical components are configured to generate heat duringoperation. The spectrally selective radiation emission device isdisposed on the housing and configured to emit radiation, when heated bythe one or more electrical components, at one or more wavelengths ofelectromagnetic energy and reflect radiation at one or more otherwavelengths of electromagnetic energy.

In one or more implementations, a computing device includes a housingconfigured according to a hand-held form factor that is suitable to beheld by one or more hands of a user, one or more computing devicecomponents disposed within the housing, and a spectrally selectiveradiation emission device. The one or more computing device componentsare configured to generate heat at an approximate operating temperatureto perform one or more computing device operations. The spectrallyselective radiation emission device is disposed on the housing andconfigured to emit radiation when at the approximate operatingtemperature at one or more wavelengths of electromagnetic energy therebycooling the one or more computing device components.

In one or more implementations, a spectrally selective radiationemission device is secured to a housing of a computing device that isconfigured to be held by one or more hands of a user. One or morecomputing device components are positioned within the housing that areconfigured to generate heat, during operation, at an approximateoperating temperature, thereby causing the spectrally selectiveradiation emission device to emit radiation at one or more wavelengthsof electromagnetic energy and thereby cooling the housing and reflectingradiation at one or more other wavelengths of electromagnetic energy.

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description is described with reference to the accompanyingfigures. In the figures, the left-most digit(s) of a reference numberidentifies the figure in which the reference number first appears. Theuse of the same reference numbers in different instances in thedescription and the figures may indicate similar or identical items.Entities represented in the figures may be indicative of one or moreentities and thus reference may be made interchangeably to single orplural forms of the entities in the discussion.

FIG. 1 is an illustration of an environment in an example implementationthat is operable to employ spectrally selective radiation emissiontechniques described herein

FIG. 2 depicts a system in an example implementation showing operationof a spectrally selective radiation emission device of FIG. 1 in greaterdetail.

FIG. 3 depicts a graph showing use of a spectrally selective radiationemission device and then an effect of removal of the spectrallyselective radiation emission device on temperature.

FIG. 4 depicts a system in an example implementation in which emissionand reflection of a spectrally selective radiation emission device ofFIG. 2 is configured to address sunlight.

FIGS. 5-7 depict examples of implementation of the spectrally selectiveradiation emission device of FIG. 1 as part of a display device and aspart of a housing of a computing device.

FIG. 8 is a flow diagram depicting a procedure in an exampleimplementation in which a spectrally selective radiation emission deviceis assembled as part of a computing device.

FIG. 9 illustrates an example system including various components of anexample device that can be implemented as any type of computing deviceas described with reference to FIGS. 1-8 to implement embodiments of thetechniques described herein.

DETAILED DESCRIPTION Overview

Temperature limits may be employed by devices, such as mobile computingdevices, to protect users of the devices from harm, protect internalcomponents of the devices from damage caused by high internaltemperatures, and so forth. However, conventional techniques typicallyemploy a reduction in power consumption to reduce the amount of heatgenerated by the device, which has a corresponding effect on an amountof functionality made available to a user of the device.

A spectrally selective radiation emission device is described. Heat maybe transferred from computing devices by convection, conduction, andradiation. By employing a spectrally selective radiation emissiondevice, the computing device may be configured to emit radiation atoperating temperatures of components of the computing device (e.g.,processors, display devices, power supplies, etc.) while stillreflecting external radiation from other sources, such as sunlight. Inthis way, the spectral selectivity may be employed to protect thecomputing device from being heated by these external sources.

For example, the spectrally selective radiation emission device may beconfigured as a fabric, paint, and so on that is applied to a housing ofa mobile computing device such as a tablet, wireless phone, and so on.Even though the spectrally selective radiation emission device may actas an insulator in relation to conduction and convection, the spectrallyselective radiation emission device may also be configured to emitradiation when heated to an operational temperature of the computingdevice. This emission may thus counteract and even overcome theinsulator effect thereby cooling an outer surface of the device. In thisway, a fabric (or paint) may be employed as an outer surface yet stillpromote cooling of the device, e.g., by five degrees Celsius, than wouldotherwise be the case. Further discussion of these and other techniquesmay be found in relation to the following sections.

In the following discussion, an example environment is first describedthat may employ the techniques described herein. Example procedures arethen described which may be performed in the example environment as wellas other environments. Consequently, performance of the exampleprocedures is not limited to the example environment and the exampleenvironment is not limited to performance of the example procedures.

Example Environment

FIG. 1 is an illustration of an environment 100 in an exampleimplementation that is operable to employ techniques described herein.The illustrated environment 100 includes a computing device 102, whichmay be configured in a variety of ways.

The computing device 102, for example, may be configured as a mobilecomputing device as illustrated having a housing 104 (e.g., formed froma metal, plastic, composite, or other material) configured according toa handheld form factor, such as a tablet computer as illustrated, mobilephone, portable game or music device, and so on. As such, the housing104 may be grasped by one or more hands 106, 108 of a user to supportinteraction in a mobile setting, e.g., to hold and interact with a userinterface as illustrated.

The computing device 102 may also be configured in a variety of otherways, such as a desktop computer, an entertainment appliance, a set-topbox communicatively coupled to a display device, a game console, one ormore servers, and so forth. Thus, the computing device 102 may rangefrom full resource devices with substantial memory and processorresources (e.g., personal computers, game consoles) to a low-resourcedevice with limited memory and/or processing resources (e.g.,traditional set-top boxes, hand-held game consoles). Further discussionof computing device 102 configurations may be found in relation to FIG.9.

The computing device 102 is illustrated as including computing devicecomponents 110 that are disposed within the housing 104. Examples ofcomputing device components 110 include a processing system 112 andmemory 114 that are illustrated as executing an operating system 116 andstoring applications 118 that are executable by the processing system112, respectively. The computing device components 110 also include anetwork connection device 120 (e.g., to support wired and/or wirelesscommunication), input/output devices 122 such as to support touchscreenfunctionality of a display device 124, and so forth.

During operation, the computing device components 110 may generate heat.As previously described, this heat may affect operation of the computingdevice 102, including an amount of functionality made available to auser of the computing device 102. Additionally, heat generation may beexacerbated for certain form factors, such as those employed by mobilecomputing devices that support limited airflow between components of thedevice.

Accordingly, the illustrated computing device 102 includes a spectrallyselective radiation emission device 126. The spectrally selectiveradiation emission device 126 is configured to emit radiation, which maybe used to remove heat generated by the computing device components 110from the computing device 102. In this way, an internal space of thehousing 104 and the computing device components 110 disposed therein maybe cooled, thereby enabling the computing device 102 to provide fullfunctionality to a user as desired, further discussion of which may befound in relation to the following figures.

Although a computing device 102 and computing device components 110 aredescribed in this example, these techniques are applicable to anyapparatus having electrical components or other components that generateheat during operation. This may include electronic devices such adisplay devices, peripheral devices, electrical charging devices, powersupplies, and so forth.

FIG. 2 depicts a system 200 in an example implementation showingoperation of the spectrally selective radiation emission device 126 ofFIG. 1 in greater detail. As previously described, the computing devicecomponents 110 may generate heat during operation. Accordingly, thecomputing device components 110 may be configured to have acorresponding operating temperature that supports full functionality ofthe components. However, this heat may cause complications, such as tocause the computing device 102 to achieve a temperature that is notconsidered safe for a user of the computing device 102 (e.g., per IEC60950) and even for the computing device components 110 themselves.

The spectrally selective radiation emission device 126, therefore, maybe configured to emit electromagnetic wavelengths 202 when at theoperating temperature associated with the computing device components110. Thus, when the computing device components 110 reach the operatingtemperature, the corresponding heat may cause the spectrally selectiveradiation emission device 126 to emit particular electromagneticwavelengths 202 (e.g., covering one or more ranges of wavelengths) andthus remove the heat from the computing device 102. This may cause acorresponding cooling of the computing device components 110 disposedwithin the housing 104 of the computing device 102.

A side effect of configuration to support emission at particularwavelengths is that the device is also configured to absorb energy atthose particular wavelengths. Accordingly, the spectrally selectiveradiation emission device 126 is configured to be selective such thatemission of electromagnetic wavelengths 202 that are caused at operatingtemperatures of the computing device components 110 is permitted butother electromagnetic wavelengths 204 are reflected.

In this way, the computing device 102 may be protected from heating thatwould otherwise be caused by these other wavelengths from externalsources yet still support cooling performed by the emittedelectromagnetic wavelengths. Thus, the spectrally selective radiationemission device 126 may overcome conventional limitations, such as foran approach in which all wavelengths of electromagnetic radiation arereflected (e.g., silver anodized aluminum) or an approach in which allwavelengths of electromagnetic radiation are absorbed, e.g., for blackplastic. Further discussion of examples of configuration for selectivelyof wavelengths to address sunlight and other external sources may befound in relation to FIG. 4.

The spectrally selective radiation emission device 126 may also beconfigured to support a variety of functionality that is not availableto the computing device 102 absent the emission functionality. Forexample, the spectrally selective radiation emission device 126 may beconfigured in a variety of ways, such as a coating (e.g., a paint) oreven a fabric that may be secured to the housing 104 of the computingdevice 102 of FIG. 1. Conventionally, use of paints and fabrics couldact as an insulator in relation to conduction of heat from a device,e.g., the use of a fabric may act as a blanket that traps heat to thedevice. However, through emission of electromagnetic wavelengths 202this effect may be counteracted and even overcome, further discussion ofwhich is described as follows and shown in a corresponding figure.

FIG. 3 depicts a graph 300 showing use of a spectrally selectiveradiation emission device 126 and then an effect of removal of thespectrally selective radiation emission device 126. The graph 300includes an X-axis that defines temperature in degrees Celsius and aY-axis that defines time in minutes.

An aluminum block is used in this example to represent a computingdevice and is wrapped in a thin polyurethane fabric and uniformly heatedthroughout to simulate operational temperature of computing devicecomponents 110. A first plot 302 defines temperature over time at asurface of the block and a second plot 304 defines temperature over timeat a surface of the fabric.

The block was allowed to reach steady state at approximately 32 degreesCelsius on its outer surface (i.e., the fabric surface of plot 304) byusing a heat input of 2.25 W, as shown at time period of approximately60-140 seconds. The aluminum surface of the block is slightly warmer dueto the insulation effect of the fabric as shown by plot 302 aspreviously described.

Next, the fabric was removed at approximately 140 minutes. After thefabric was removed, the temperature of the aluminum surface increased byapproximately four to five degrees Celsius as shown by plot 302. Thus,even though the fabric insulates the aluminum conductively, it alsoprovides a surface that is an excellent radiator in the range of a 32degree Celsius blackbody thus enabling the block to lose significantheat via radiation. With this increase in radiation heat transfer, lessof the 2.25 W is lost by convection and so the surface temperature isreduced, even to such a degree that the aluminum block temperature isreduced as well. At two hundred minutes the power to the heater was shutoff and as should be apparent at 140 minutes the temperature of thefabric went back to room temperature as it was no being longer heated bythe block.

Thus, in this example radiation emission by the spectrally selectiveradiation emission device 126 overcomes an effect of conductive andconvective insulation of the device and thus may be used to cool thedevice as opposed to a bare surface of the device. As previouslydescribed this may support a variety of functionality, such as to permitsecuring of a fabric to the housing 104 of the computing device 102 toprovide a desired tactile feel but still permit cooling of the computingdevice 102. Further, as illustrated an outer surface of the spectrallyselective radiation emission device 126 may be lower than at a housing104 and thus may further reduce an amount of heat that reaches a user ofthe device, e.g., at a hand 106 of a user holding the housing 104.Spectral selectivity of the spectrally selective radiation emissiondevice 126 may be configured in a variety of different wavelengths toprovide desired functionality, further discussion of which is describedas follows and shown in a corresponding figure.

FIG. 4 depicts a system 400 in an example implementation in whichemission and reflection of the spectrally selective radiation emissiondevice 126 is configured to address sunlight 402. In this example, thespectrally selective radiation emission device 126 is secured to acomputing device surface 404 (e.g., the housing 104 of FIG. 1, displaydevice 124, and so on), e.g., applied as a paint, through use of heat oradhesive to secure a fabric, and so on.

Sunlight 402 includes a variety of different wavelengths across theelectromagnetic spectrum, a large portion of which is included in theinfrared spectrum. For example, near and medium infrared wavelengths 406(e.g., from approximately 0.75 to 2.5 micrometers for near to about 3-8micrometers for medium) may include a majority of the sun's energyreceived by the computing device 102 from sunlight 402, e.g., over 37percent. Far infrared wavelengths (e.g., from approximately 14micrometers to one millimeter) may include eleven percent of the sun'senergy received by the computing device 102 from sunlight 402. Most ofthis is absorbed by the atmosphere, however, thus allowing a material tobe chosen for the spectrally selective radiation emission device 126that emits/absorbs well at these wavelengths hence allowing the deviceto lose heat by radiation.

The spectrally selective radiation emission device 126 in this instanceis configured to take this into account. As illustrated, the spectrallyselective radiation emission device 126 may be configured to emitradiation at far infrared wavelengths 408 when the computing devicecomponents 110 have reached a steady-state operational temperature,e.g., approximately fifty degrees Celsius. Additionally, the spectrallyselective radiation emission device 126 may be configured to reflectnear and medium infrared wavelengths 406 of the sunlight 402.

Thus, the spectrally selective radiation emission device 126 may act tocool the computing device using far infrared wavelengths 408 foremission (e.g., approximately 10 k nm) yet resist heating caused by nearinfrared wavelengths 406 from the sunlight 402. The spectrally selectiveradiation emission device 126 may also be configured to reflect one ormore visible wavelengths 410, e.g., to support a choice of color. Inthis way, the spectrally selective radiation emission device 126 maypermit emission yet reduce potential absorption by being configured toemit and absorb using wavelengths that have reduced amounts of energy incomparison with other portions of the electromagnetic spectrumencountered by the computing device 102.

Although near and far infrared wavelengths were discussed by way ofexample, other ranges of electromagnetic radiation are alsocontemplated. This may include configuration of the spectrally selectiveradiation emission device 126 to permit or restrict short-wavelengthinfrared from 1.4-3 micrometers, mid-wavelength infrared from about 3-8micrometers, long-wavelength infrared from about 8-15 micrometers, aswell as other range of visible and non-visible (e.g., UV) light. Thespectrally selective radiation emission device 126 may be configured forplacement as part of a variety of external surfaces of the computingdevice 102, examples of which are described as follows and shown incorresponding figures.

FIGS. 5-7 depict examples 500, 600, 700 of implementation of thespectrally selective radiation emission device 126 as part of a displaydevice 124 and as part of the housing 104 of the computing device 102.In the example 500 of FIG. 5, the spectrally selective radiationemission device 126 is disposed over display layers 502 of the displaydevice 124 of FIG. 1, e.g., a transparent substrate of the device. Thespectrally selective radiation emission device 126 includes a layerformed from a far IR emissive and visibly transparent material 504 andthus may emit radiation as previously described yet permit viewing of anoutput of the display device 124. A far IR and visibly transparentmaterial 506 is formed as a layer over the far IR emissive and visiblytransparent material 504 to protect that layer. Thus, in this exampleheat generated by electronic components of the display device 124 may beemitted using the spectrally selective radiation emission device 126.

In the example 600 of FIG. 6, a far IR material transparent material 602is formed as a layer over a far IR emissive material 604. Additionally,printed circuit board (PCB) and computing device components 606 arecontacted by a heat spreader 608 to transfer heat to the spectrallyselective radiation emission device 126. For example, the heat spreader608 may be incorporated as part of the housing 104 of the computingdevice 102. In this way, the spectrally selective radiation emissiondevice 126 may be configured to insulate a user from heat while allowingfar IR radiation to pass through.

In the example 700 of FIG. 7, PCB and computing device components 606are also illustrated. In this example, a far IR emissive heat spreader702 is separated by an air gap 704 from a far IR transparent materialthat is visibly reflective 706, e.g., to provide a desired color. Thispermits high temperature electronic components to radiate to itssurroundings and operate at a high temperature to maximize heat loss byradiation without burning a user.

As previously described, a variety of different materials may be used toform the spectrally selective radiation emission device 126, such as toapply as a paint, a fabric, and so on. For example, a spectrallyselective coating may be applied to a flexible substrate, such as apolyester urethane material having embedded aluminum spheres under fourmicrons in diameter, multiwall carbon nanotube with nickel oxidenano-composite coatings, and so on. A variety of other examples are alsocontemplated without departing from the spirit and scope thereof.

Example Procedures

The following discussion describes spectrally selective radiationemission techniques that may be implemented utilizing the previouslydescribed systems and devices. Aspects of each of the procedures may beimplemented in hardware, firmware, or software, or a combinationthereof. The procedures are shown as a set of blocks that specifyoperations performed by one or more devices and are not necessarilylimited to the orders shown for performing the operations by therespective blocks. In portions of the following discussion, referencewill be made to FIGS. 1-7.

FIG. 8 depicts a procedure 800 in an example implementation in which acomputing device is configured to support spectrally selective radiationemission techniques. A spectrally selective radiation emission device issecured to a housing of a computing device that is configured to be heldby one or more hands of a user (block 802). This may be performed in avariety of ways, such as applied as a coating, heat transfer, throughuse of an adhesive to secure a fabric, and so forth.

One or more computing device components are positioned within thehousing that are configured to generate heat, during operation, at anapproximate operating temperature, thereby causing the spectrallyselective radiation emission device to emit radiation at one or morewavelengths of electromagnetic energy and thereby cooling the housingand reflect radiation at one or more other wavelengths ofelectromagnetic energy (block 804). The computing device components 110may be configured in a variety of ways, such as a power supply,processing system 112, display device 124, or any other component thatis configured to generate heat.

Example System and Device

FIG. 9 illustrates an example system generally at 900 that includes anexample computing device 902 that is representative of one or morecomputing systems and/or devices that may implement the varioustechniques described herein. This is illustrated through inclusion ofthe spectrally selective radiation emission device 126. The computingdevice 902 may be, for example, a server of a service provider, a deviceassociated with a client (e.g., a client device), an on-chip system,and/or any other suitable computing device or computing system.

The example computing device 902 as illustrated includes a processingsystem 904, one or more computer-readable media 906, and one or more I/Ointerface 908 that are communicatively coupled, one to another. Althoughnot shown, the computing device 902 may further include a system bus orother data and command transfer system that couples the variouscomponents, one to another. A system bus can include any one orcombination of different bus structures, such as a memory bus or memorycontroller, a peripheral bus, a universal serial bus, and/or a processoror local bus that utilizes any of a variety of bus architectures. Avariety of other examples are also contemplated, such as control anddata lines.

The processing system 904 is representative of functionality to performone or more operations using hardware. Accordingly, the processingsystem 904 is illustrated as including hardware element 910 that may beconfigured as processors, functional blocks, and so forth. This mayinclude implementation in hardware as an application specific integratedcircuit or other logic device formed using one or more semiconductors.The hardware elements 910 are not limited by the materials from whichthey are formed or the processing mechanisms employed therein. Forexample, processors may be comprised of semiconductor(s) and/ortransistors (e.g., electronic integrated circuits (ICs)). In such acontext, processor-executable instructions may beelectronically-executable instructions.

The computer-readable storage media 906 is illustrated as includingmemory/storage 912. The memory/storage 912 represents memory/storagecapacity associated with one or more computer-readable media. Thememory/storage component 912 may include volatile media (such as randomaccess memory (RAM)) and/or nonvolatile media (such as read only memory(ROM), Flash memory, optical disks, magnetic disks, and so forth). Thememory/storage component 912 may include fixed media (e.g., RAM, ROM, afixed hard drive, and so on) as well as removable media (e.g., Flashmemory, a removable hard drive, an optical disc, and so forth). Thecomputer-readable media 906 may be configured in a variety of other waysas further described below.

Input/output interface(s) 908 are representative of functionality toallow a user to enter commands and information to computing device 902,and also allow information to be presented to the user and/or othercomponents or devices using various input/output devices. Examples ofinput devices include a keyboard, a cursor control device (e.g., amouse), a microphone, a scanner, touch functionality (e.g., capacitiveor other sensors that are configured to detect physical touch), a camera(e.g., which may employ visible or non-visible wavelengths such asinfrared frequencies to recognize movement as gestures that do notinvolve touch), and so forth. Examples of output devices include adisplay device (e.g., a monitor or projector), speakers, a printer, anetwork card, tactile-response device, and so forth. Thus, the computingdevice 902 may be configured in a variety of ways as further describedbelow to support user interaction.

Various techniques may be described herein in the general context ofsoftware, hardware elements, or program modules. Generally, such modulesinclude routines, programs, objects, elements, components, datastructures, and so forth that perform particular tasks or implementparticular abstract data types. The terms “module,” “functionality,” and“component” as used herein generally represent software, firmware,hardware, or a combination thereof. The features of the techniquesdescribed herein are platform-independent, meaning that the techniquesmay be implemented on a variety of commercial computing platforms havinga variety of processors.

An implementation of the described modules and techniques may be storedon or transmitted across some form of computer-readable media. Thecomputer-readable media may include a variety of media that may beaccessed by the computing device 902. By way of example, and notlimitation, computer-readable media may include “computer-readablestorage media” and “computer-readable signal media.”

“Computer-readable storage media” may refer to media and/or devices thatenable persistent and/or non-transitory storage of information incontrast to mere signal transmission, carrier waves, or signals per se.Thus, computer-readable storage media refers to non-signal bearingmedia. The computer-readable storage media includes hardware such asvolatile and non-volatile, removable and non-removable media and/orstorage devices implemented in a method or technology suitable forstorage of information such as computer readable instructions, datastructures, program modules, logic elements/circuits, or other data.Examples of computer-readable storage media may include, but are notlimited to, RAM, ROM, EEPROM, flash memory or other memory technology,CD-ROM, digital versatile disks (DVD) or other optical storage, harddisks, magnetic cassettes, magnetic tape, magnetic disk storage or othermagnetic storage devices, or other storage device, tangible media, orarticle of manufacture suitable to store the desired information andwhich may be accessed by a computer.

“Computer-readable signal media” may refer to a signal-bearing mediumthat is configured to transmit instructions to the hardware of thecomputing device 902, such as via a network. Signal media typically mayembody computer readable instructions, data structures, program modules,or other data in a modulated data signal, such as carrier waves, datasignals, or other transport mechanism. Signal media also include anyinformation delivery media. The term “modulated data signal” means asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in the signal. By way of example,and not limitation, communication media include wired media such as awired network or direct-wired connection, and wireless media such asacoustic, RF, infrared, and other wireless media.

As previously described, hardware elements 910 and computer-readablemedia 906 are representative of modules, programmable device logicand/or fixed device logic implemented in a hardware form that may beemployed in some embodiments to implement at least some aspects of thetechniques described herein, such as to perform one or moreinstructions. Hardware may include components of an integrated circuitor on-chip system, an application-specific integrated circuit (ASIC), afield-programmable gate array (FPGA), a complex programmable logicdevice (CPLD), and other implementations in silicon or other hardware.In this context, hardware may operate as a processing device thatperforms program tasks defined by instructions and/or logic embodied bythe hardware as well as a hardware utilized to store instructions forexecution, e.g., the computer-readable storage media describedpreviously.

Combinations of the foregoing may also be employed to implement varioustechniques described herein. Accordingly, software, hardware, orexecutable modules may be implemented as one or more instructions and/orlogic embodied on some form of computer-readable storage media and/or byone or more hardware elements 910. The computing device 902 may beconfigured to implement particular instructions and/or functionscorresponding to the software and/or hardware modules. Accordingly,implementation of a module that is executable by the computing device902 as software may be achieved at least partially in hardware, e.g.,through use of computer-readable storage media and/or hardware elements910 of the processing system 904. The instructions and/or functions maybe executable/operable by one or more articles of manufacture (forexample, one or more computing devices 902 and/or processing systems904) to implement techniques, modules, and examples described herein.

As further illustrated in FIG. 9, the example system 900 enablesubiquitous environments for a seamless user experience when runningapplications on a personal computer (PC), a television device, and/or amobile device. Services and applications run substantially similar inall three environments for a common user experience when transitioningfrom one device to the next while utilizing an application, playing avideo game, watching a video, and so on.

In the example system 900, multiple devices are interconnected through acentral computing device. The central computing device may be local tothe multiple devices or may be located remotely from the multipledevices. In one embodiment, the central computing device may be a cloudof one or more server computers that are connected to the multipledevices through a network, the Internet, or other data communicationlink.

In one embodiment, this interconnection architecture enablesfunctionality to be delivered across multiple devices to provide acommon and seamless experience to a user of the multiple devices. Eachof the multiple devices may have different physical requirements andcapabilities, and the central computing device uses a platform to enablethe delivery of an experience to the device that is both tailored to thedevice and yet common to all devices. In one embodiment, a class oftarget devices is created and experiences are tailored to the genericclass of devices. A class of devices may be defined by physicalfeatures, types of usage, or other common characteristics of thedevices.

In various implementations, the computing device 902 may assume avariety of different configurations, such as for computer 914, mobile916, and television 918 uses. Each of these configurations includesdevices that may have generally different constructs and capabilities,and thus the computing device 902 may be configured according to one ormore of the different device classes. For instance, the computing device902 may be implemented as the computer 914 class of a device thatincludes a personal computer, desktop computer, a multi-screen computer,laptop computer, netbook, and so on.

The computing device 902 may also be implemented as the mobile 916 classof device that includes mobile devices, such as a mobile phone, portablemusic player, portable gaming device, a tablet computer, a multi-screencomputer, and so on. The computing device 902 may also be implemented asthe television 918 class of device that includes devices having orconnected to generally larger screens in casual viewing environments.These devices include televisions, set-top boxes, gaming consoles, andso on.

The techniques described herein may be supported by these variousconfigurations of the computing device 902 and are not limited to thespecific examples of the techniques described herein. This functionalitymay also be implemented all or in part through use of a distributedsystem, such as over a “cloud” 920 via a platform 922 as describedbelow.

The cloud 920 includes and/or is representative of a platform 922 forresources 924. The platform 922 abstracts underlying functionality ofhardware (e.g., servers) and software resources of the cloud 920. Theresources 924 may include applications and/or data that can be utilizedwhile computer processing is executed on servers that are remote fromthe computing device 902. Resources 924 can also include servicesprovided over the Internet and/or through a subscriber network, such asa cellular or Wi-Fi network.

The platform 922 may abstract resources and functions to connect thecomputing device 902 with other computing devices. The platform 922 mayalso serve to abstract scaling of resources to provide a correspondinglevel of scale to encountered demand for the resources 924 that areimplemented via the platform 922. Accordingly, in an interconnecteddevice embodiment, implementation of functionality described herein maybe distributed throughout the system 900. For example, the functionalitymay be implemented in part on the computing device 902 as well as viathe platform 922 that abstracts the functionality of the cloud 920.

CONCLUSION

Although the example implementations have been described in languagespecific to structural features and/or methodological acts, it is to beunderstood that the implementations defined in the appended claims isnot necessarily limited to the specific features or acts described.Rather, the specific features and acts are disclosed as example forms ofimplementing the claimed features.

What is claimed is:
 1. An apparatus comprising: a housing; one or moreelectrical components disposed within the housing, the one or moreelectrical components configured to generate heat during operation; anda spectrally selective radiation emission device, disposed on thehousing, that is configured to: emit radiation, when heated by the oneor more electrical components, at one or more wavelengths ofelectromagnetic energy; and reflect radiation at one or more otherwavelengths of electromagnetic energy.
 2. An apparatus as described inclaim 1, wherein: the one or more other wavelengths of electromagneticenergy correspond to a near infrared spectrum; the one or morewavelength of electromagnetic energy that are emitted correspond to afar infrared spectrum; and the spectrally selective radiation emissiondevice is configured to reflect one or more wavelengths ofelectromagnetic energy that correspond to the visible spectrum.
 3. Anapparatus as described in claim 1, wherein the spectrally selectiveradiation emission device is configured as a fabric that is secured tothe housing.
 4. An apparatus as described in claim 1, wherein thespectrally selective radiation emission device is configured as a paintthat is applied to the housing.
 5. An apparatus as described in claim 1,wherein the approximate operating temperature is between thirty andfifty degrees Celsius.
 6. An apparatus as described in claim 1, whereina surface temperature of the housing is higher than a surfacetemperature of the spectrally selective radiation emission device duringoperation of the one or more computing device components.
 7. Anapparatus as described in claim 1, wherein the spectrally selectiveradiation emission device includes an outer layer of material that istransparent to the emitted radiation at the one or more wavelengths. 8.A computing device comprising: a housing configured according to ahand-held form factor that is suitable to be held by one or more handsof a user; one or more computing device components disposed within thehousing, the one or more computing device components configured togenerate heat at an approximate operating temperature to perform one ormore computing device operations; and a spectrally selective radiationemission device, disposed on the housing, that is configured to emitradiation when at the approximate operating temperature at one or morewavelengths of electromagnetic energy thereby cooling the one or morecomputing device components.
 9. A computing device as described in claim8, wherein the spectrally selective radiation emission device isconfigured to reflect at least one or more other wavelengths ofelectromagnetic energy.
 10. A computing device as described in claim 9,wherein the one or more other wavelengths of electromagnetic energycorrespond to a near infrared spectrum and the one or more wavelength ofelectromagnetic energy that are emitted correspond to a far infraredspectrum.
 11. A computing device as described in claim 8, wherein thespectrally selective radiation emission device is configured as a fabricthat is secured to the housing.
 12. A computing device as described inclaim 8, wherein the spectrally selective radiation emission device isconfigured as a paint that is applied to the housing.
 13. A computingdevice as described in claim 8, wherein the approximate operatingtemperature is between thirty and forty degrees Celsius.
 14. A computingdevice as described in claim 8, wherein a surface temperature of thehousing is higher than a surface temperature of the spectrally selectiveradiation emission device during operation of the one or more computingdevice components.
 15. A method comprising: securing a spectrallyselective radiation emission device to a housing of a computing devicethat is configured to be held by one or more hands of a user; andpositioning one or more computing device components within the housingthat are configured to generate heat, during operation, at anapproximate operating temperature, thereby causing the spectrallyselective radiation emission device to emit radiation at one or morewavelengths of electromagnetic energy thereby cooling the housing andreflect radiation at one or more other wavelengths of electromagneticenergy.
 16. A method as described in claim 15, wherein the one or moreother wavelengths of electromagnetic energy correspond to a nearinfrared spectrum and the one or more wavelength of electromagneticenergy that are emitted correspond to a far infrared spectrum.
 17. Amethod as described in claim 15, wherein the spectrally selectiveradiation emission device is configured as a fabric that is secured tothe housing.
 18. A method as described in claim 15, wherein thespectrally selective radiation emission device is configured as a paintthat is applied to the housing.
 19. A method as described in claim 15,wherein the approximate operating temperature is between thirty andforty degrees Celsius.
 20. A method as described in claim 15, wherein asurface temperature of the housing is higher than a surface temperatureof the spectrally selective radiation emission device during operationof the one or more computing device components.